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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gob
import (
"bytes"
"fmt"
"io"
"os"
"runtime"
"testing"
)
type Bench struct {
A int
B float64
C string
D []byte
}
func benchmarkEndToEnd(r io.Reader, w io.Writer, b *testing.B) {
b.StopTimer()
enc := NewEncoder(w)
dec := NewDecoder(r)
bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
b.StartTimer()
for i := 0; i < b.N; i++ {
if enc.Encode(bench) != nil {
panic("encode error")
}
if dec.Decode(bench) != nil {
panic("decode error")
}
}
}
func BenchmarkEndToEndPipe(b *testing.B) {
r, w, err := os.Pipe()
if err != nil {
b.Fatal("can't get pipe:", err)
}
benchmarkEndToEnd(r, w, b)
}
func BenchmarkEndToEndByteBuffer(b *testing.B) {
var buf bytes.Buffer
benchmarkEndToEnd(&buf, &buf, b)
}
func TestCountEncodeMallocs(t *testing.T) {
var buf bytes.Buffer
enc := NewEncoder(&buf)
bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
memstats := new(runtime.MemStats)
runtime.ReadMemStats(memstats)
mallocs := 0 - memstats.Mallocs
const count = 1000
for i := 0; i < count; i++ {
err := enc.Encode(bench)
if err != nil {
t.Fatal("encode:", err)
}
}
runtime.ReadMemStats(memstats)
mallocs += memstats.Mallocs
fmt.Printf("mallocs per encode of type Bench: %d\n", mallocs/count)
}
func TestCountDecodeMallocs(t *testing.T) {
var buf bytes.Buffer
enc := NewEncoder(&buf)
bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
const count = 1000
for i := 0; i < count; i++ {
err := enc.Encode(bench)
if err != nil {
t.Fatal("encode:", err)
}
}
dec := NewDecoder(&buf)
memstats := new(runtime.MemStats)
runtime.ReadMemStats(memstats)
mallocs := 0 - memstats.Mallocs
for i := 0; i < count; i++ {
*bench = Bench{}
err := dec.Decode(&bench)
if err != nil {
t.Fatal("decode:", err)
}
}
runtime.ReadMemStats(memstats)
mallocs += memstats.Mallocs
fmt.Printf("mallocs per decode of type Bench: %d\n", mallocs/count)
}
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